Silo



Jan. 8, 1935. G. A. oLBRlcH 1,987,155

SILO

Filed Jan. l0, l1954 @um Aulilllllllllllmum 0 n/veW/or /W/ y 721/129 rneys Patented Jan. 8, 1935 v 55' A Secured as` by means fv Screws '01" th likelt theI i of onestave fitting intdtheV cooperating gro `'Ifile Strips 72 1 during, the course .of 1 erectlo ari .uppene 1ower. .ana .anintermedia isili.. door.. frame isi, pref'eralolyl 'off arcuate' in horizontal .Crossseetidnfandclosing'y 't mgl o f .the ."same; are removable panels" arefmroght .into abutment.. .Withthe 'torigu l es. 1.012 adjacent.. states toi-receive adjacent .stares 17. ,and .the out of the grooved portions are p1"ovided"Withton'gn 55'! responding to one .The abutting ends ofthe staves form horizontal,

joints at intervals from bottom to top of the silo and thesehorizontal joints are staggered so that the horizontal joints between the staves in one vertical column of staves are located midway be# tween the horizontal joints of the next adjacent vertical columns of staves. The horizontal joints between staves are thus locatedirom bottorni-to top of the silot at intervals equal to half the length l of the longest staves used.

The lowermost hoop 7 encompasses the'lower ends of the lowermost staves. VHoops 8 are prov-,l

vvidedwhich;4 encircle the staves of the silo at ver-- ticalintervals,corresponding to the. spacing bei-j tween different horizontal 'joints between the staves.l In other words, the center of the lowest hoop 8 is spaced fromthe lower edge of the hoop 7a distance corresponding to one half thelength of `the longest staves-17 used and the remainder of the'hoops 8.are spaced'ycenterto centera distance corresponding to one halfthe length ofthe longest staves.

to lthevbottoxn hoop' 7,' is also provided and the upper edge of this upper hoop is `spaced from the center of the uppermostkr hoop 8a vdistance cori-` half the length of the longest staves 17. The hoops 7 and 8 serve in the place ofjoists or "studs to al building or ribs toa ship andthe, staves `17 are secured at their ends and ati their 'medial portions4 to these hoops as by ,mmeans of nails or screws 16,5preferably. of copper construction. .Each stave is thus secured at its c 6 Y 4 t thetop ofthe silo.

two lends 'andat therhoops 7 and18; o Each'hoop 7 and 8 is ma itsfLmiddle portion to three' of de offwoodl and of seveach hoop is shownv as having three, laminations and each' Ilamination consists of three pieces, of woodso Vthat each lamination. forms a complete circle." ,The-'joints between thefdiierentpieces .vt forming the ,different larninations of eachhoop are cirGuniierentially spacedfrom each vother so astov givethe hoop the utmost vstrength'. These hoops in additiongto acting towsecure, reinforce and brace the staves and form structure to which the staves lso as to cause them to retain'v their cir.

cular arrangement and the hoops extend across lthe doorframes 12 over the sills vthereof and the fho'opsjare secured as by nailing to these jdoor frames. f

. Suitable 1 respectivelyto the doors 13 and tothe hoops' 8 YA silo section maybe considered to be that'porf tion of the silo having an upper edge lying in the same plane as the upper edge of one of the door frames 12 and having -a lower edge lying in the same lplane as the lower' edge of one of the door vframes. kThe silo may be built up of as many silo sectionsas desired until the silo is of the desired height, whereupon the roof 24 will be erected uponv o thre `uppermost section. In setting up thesilo, the

An upper hoop 7, exactlysimilar .il eral laminations; In theillustrated embodiment,

, t t eual f, the staves may benailed` as do thewjoistsor studsf; -oi a building or'the ribsofa ship; also compress ladderrungs 22 and 23 are attachedy lower hoop 7 is first located in place `on the base 6, whereupon the door frame 12 of the lowermost section is put in position. Shortand long staves 17 circumferentially alternated are then esserne` bled within the hoop 7 about the door frame and as the adjacent staves vare brought with their edges into abutment, the strips 21 are slidv in place. Eventually thelowermost section will take'circular form, whereupon a circular draw rod may be placed about the section'and drawnlvup totighten allthefjoints between thestaves, This y draw rod can also be used for tightening the hoop 7 whereuponthe nuts 11 may be screwed home to hold the parts of the lowermost section in proper position. 'I'he lower hoop 8 may thenbe applied, whereupon the staves 17 forming certain of the Mupper" staves-`of` the lowermost section and certain 1- oi! the lower staves of the next upper section may be lowermost section may then be applied. ,o ,n this nner the S may be coirltirulolllr `built up withgreat ease. il "1"" is th hoops] .and .8

r w of the silo are made'of in of ,which extends circumferen'tialF Y lyoffthe hooplsvorgtransversely of the staves 17,

. these hoo circumI/erentiall or' as "they swell Shrink, "SS V01,1657 traction"` of v`wood` par isbut slight. hops '1 and a; therefore-instead o; loosening and tightening materially abouti-,hef o .A o '35r y placefwiutightlremf, `brace the staves'.l Although the staves 17"contract` staves; asdoj'rmetal hoops on metal hoop Isilosl asj ytemporature changes take Asecured in placeand the upper hoop of the l and expand through temperaturefchangef l swell through moisture content change,

shrink rand c 'and expansionv and 'shrinking arid-this contraction' and 1 swelling' takes; the grainlofthese hoops hold the taves withlsilage; thefinner surfaces of fthe place chiey-transversely ofV` staves, i. Le.' circumferentially 'i securingthe' stavesito the"v t "in place" relativeftofeach" otherand to thej hoops so las to prevent the-silo" j from being-tumbleddown as by wind Astorms when the siloisemptyand driedV out; 1Vyihenfthe silo walls become moist causing the sftavestoi expand f transversely otthelrggrain to" force them tightlyi against the confining hoops', thereby vtightening thejoint'sVj between `the staves.y The strips 21 are `1 t effective totake up` for dlscrepanclesbetweenun- L and outer portions of the staves through heat and The stripsy serve'to edlflahze lall 'oisture action;

expansion and'swelling lbetweenfthe inner cont actions-and expansion ofjthe staves prevent- 'joints between'Y adj acet fstaves can'be erected with great ease.-y

.01133895 may 4 through the "inside-welll of the It wm,l or coursafbe understodgthatfvarious be made fin the "orm, details," arf"- rangement and; `proport ions of 4the various partsl without, departing.v from invention@ 1 l y t. l t Whatisclaimedisz-j i 1.; AA wooden vstilo comprising Va multiplicity' of wooden staves arranged' in vertical. relation and;A

joined together V,to form a' substantially circular wall andwoodeny 4hoopsencircling ASaid wall atf vertically 4,spaced theA scope oi?V the present*y cured to said hoops and said hoops confining the staves and forming the sole means securing, bracing and reinforcing said staves.

. 2. A wooden silo comprising a multiplicity of wooden staves arranged in Vertical relation and joined .together to form a substantially circular wall andwooden hoops encircling said wall at vertically spaced intervals, each stave being nailed at each end to certain of said hoops and certain of said staves resting at their lower ends on the upper ends of other of said staves, said hoops being the sole means conning the staves and securing, bracing and reinforcing the same.

3. A wooden silo comprising a multiplicity of Wooden staves arranged in vertical relation and joined together to form a substantially circular wall and laminated Wooden hoops encircling said wall at vertically spaced intervals, each stave being nailed at each end to certain of said hoops,

each lamination of each hoop comprising'several individual piecesof wood, said yhoops'confning the staves and securing, bracing and reinforcing said Wall. i l

4. Asilo sectioncomprising a vertical substantially circular wall, said wall consisting chiefly of a multiplicity of staves, said vstaveshaving tongue and groove connections connecting adjacent edges of adjacent staves, said adjacent edges having oppositely opposed longitudinal rabbets of angular-shape in cross section cut therein and spaced from the tongue and groove connections,

strips of T-shape in cross section received within and filling the opposing rabbets cut in adjacent edges of said staves, and hoops encircling said wall whereby doublejoints are formed from the outer to` the inner side of said Wall between adjacent staves.

GEORGE A. OLBRICH. 

